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Date: Tue, 11 Feb 2020 18:28:00 -0000
From: Segher Boessenkool <segher@kernel.crashing.org>
To: will schmidt <will_schmidt@vnet.ibm.com>
Cc: gcc-patches@gcc.gnu.org, David Edelsohn <dje.gcc@gmail.com>
Subject: Re: [PATCH] Add ppc_ieee128_ok target-supports proc
Message-ID: <20200211182800.GY22482@gate.crashing.org>
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Hi!

On Tue, Feb 11, 2020 at 12:10:50PM -0600, will schmidt wrote:
> +# See if the __ieee128 keyword is understood.
> +proc check_effective_target_ppc_ieee128_ok { } {
> +    return [check_cached_effective_target ppc_ieee128_ok {
> +	# disable on AIX.
> +	if { [istarget *-*-aix*] } {
> +	    expr 0
> +	} else {
> +	    set options "-mfloat128"
> +	    check_runtime_nocache ppc_ieee128_ok {
> +		int main()
> +		{
> +		  __ieee128 a;
> +		  return 0;
> +		}
> +	    } $options
> +	}
> +    }]
> +}

It would be better if you didn't need to special-case AIX here, if the
actual test would figure out it cannot do __ieee128 on AIX.

But, okay for trunk.  Thanks!


Segher